US Patent No: 4,867,793

Number of patents in Portfolio can not be more than 2000

Nacreous pigments

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Importance

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Abstract

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Platelet-shaped colored pigments in which a platelet-shaped substrate is provided with a compact coating containing iron(II) oxide, which coating has a high gloss and, depending on the layer thickness, shows the interference color of thin platelets, are described.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MERCK PATENT GMBHDARMSTADT2102

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ambrosius, Kalus Frankfurt am Main, DE 1 73
Brucker, Hans D Darmstadt, DE 1 73
Franz, Klaus D Kelkheim, DE 5 153
Kanpp, August Dieburg, DE 1 73

Cited Art Landscape

Patent Info (Count) # Cites Year
 
BASF CORPORATION (1)
* 4,618,375 Transparent iron oxide pigments 8 1984
 
MERCK PATENT GMBH (3)
* 4,435,220 Transparent colored pigments 42 1982
* 4,509,988 Nacreous pigments having improved light fastness, their preparation and use 23 1982
* 4,482,389 Nacreous pigments 21 1983
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
* 2007/0212,487 Effect pigments based on coated glass flakes 4 2007
* 2010/0255,047 EFFECT PIGMENTS BASED ON COATED GLASS FLAKES 0 2010
* 2012/0237,577 Black Effect Pigment 1 2012
 
BASF CORPORATION (1)
* 8,728,502 Black effect pigment 0 2012
 
NIPPON SHEET GLASS CO., LTD. (2)
* 2007/0032,573 Black bright pigment, and cosmetic, coating composition, resin compostion and ink composition comprising the same 9 2004
* 2007/0134,179 Colored bright pigment 1 2005
 
NOMA HOLDING S.A. (1)
6,695,905 PIGMENTS HAVING A VIEWING ANGLE DEPENDENT SHIFT OF COLOR, METHOD FOR PRODUCING SAID PIGMENTS, USE OF SAID PIGMENTS IN SECURITY APPLICATIONS, COATING COMPOSITION COMPRISING SAID PIGMENTS AND A DETECTING DEVICE 17 2002
 
NASHUA CORPORATION (1)
* 6,107,244 Verification methods employing thermally--imageable substrates 3 1998
 
BASF CATALYSTS LLC (1)
7,678,449 Iridescent magnetic effect pigments comprising a ferrite layer 7 2006
 
ECKART-WERKE STANDARD BRONZEPULVER- (1)
* 5,931,996 Colored aluminum pigments, process for producing them and their use 31 1997
 
Nihon Koken Kogyo KK (4)
* 8,016,934 Pearlescent pigment 5 2005
* 2006/0144,294 Pearlescent pigment 7 2005
* 2006/0144,295 Pearlescent pigment 1 2005
8,153,163 Pearlescent pigment 1 2011
 
JDS UNIPHASE CORPORATION (23)
7,258,915 Flake for covert security applications 8 2003
* 2005/0037,192 Flake for covert security applications 8 2003
7,754,112 Methods for forming security articles having diffractive surfaces and color shifting backgrounds 0 2003
* 2004/0094,850 Methods for forming security articles having diffractive surfaces and color shifting backgrounds 29 2003
7,241,489 Opaque flake for covert security applications 8 2004
* 2004/0151,827 Opaque flake for covert security applications 11 2004
7,517,578 Method and apparatus for orienting magnetic flakes 10 2004
* 2005/0106,367 Method and apparatus for orienting magnetic flakes 39 2004
7,300,695 Alignable diffractive pigment flakes 10 2005
* 2005/0123,755 Alignable diffractive pigment flakes 10 2005
7,645,510 Provision of frames or borders around opaque flakes for covert security applications 3 2005
* 2006/0035,080 Provision of frames or borders around opaque flakes for covert security applications 26 2005
7,604,855 Kinematic images formed by orienting alignable flakes 4 2005
* 2006/0097,515 Kinematic images formed by orienting alignable flakes 16 2005
8,343,615 Dynamic appearance-changing optical devices (DACOD) printed in a shaped magnetic field including printable fresnel structures 3 2006
7,625,632 Alignable diffractive pigment flakes and method and apparatus for alignment and images formed therefrom 6 2006
7,934,451 Apparatus for orienting magnetic flakes 4 2007
8,118,963 Stamping a coating of cured field aligned special effect flakes and image formed thereby 0 2007
7,550,197 Non-toxic flakes for authentication of pharmaceutical articles 5 2007
7,880,943 Patterned optical structures with enhanced security feature 2 2007
8,658,280 Taggent flakes for covert security applications having a selected shape 0 2011
8,726,806 Apparatus for orienting magnetic flakes 0 2012
8,999,616 Taggent flakes for covert security applications having a selected shape 0 2014
 
ECKART GMBH (4)
* 2008/0118,448 Colored Metal Pigments, Method for the Production Thereof, Use of the Colored Metal Pigments in Cosmetics, and Cosmetic Containing These 0 2004
9,265,701 Highly lustrous silver-colored pigments with high opacity and metallic appearance, process for the preparation thereof and use of same 0 2012
9,084,732 Cosmetic formulations comprising high gloss non-metallic silver-colored pigments 0 2012
9,051,471 Weather-resistant pearlescent pigments, process for the production and use thereof 0 2012
 
SUN CHEMICAL CORPORATION (14)
* 7,850,775 Multi-colored lustrous pearlescent pigments 10 2007
* 2008/0110,371 SECURITY PIGMENTS AND THE PROCESS OF MAKING THEREOF 3 2007
8,906,154 Coating, ink, or article comprising multi-colored lustrous pearlescent pigments 0 2007
* 8,349,067 Multi-colored lustrous pearlescent pigments 1 2007
8,221,536 Cosmetic comprising multi-colored lustrous pearlescent pigments 1 2007
8,211,224 Multi-colored lustrous pearlescent pigments and process for making 1 2007
* 2008/0118,452 Cosmetic Comprising Multi-Colored Lustrous Pearlescent Pigments 2 2007
* 2008/0115,694 Multi-Colored Lustrous Pearlescent Pigments 6 2007
* 2008/0110,372 Multi-Colored Lustrous Pearlescent Pigments and Process for Making 4 2007
8,323,396 Orange pearlescent pigments 1 2008
* 2009/0208,436 ORANGE PEARLESCENT PIGMENTS 4 2008
8,211,225 Magnetic pigments and process of enhancing magnetic properties 1 2008
8,486,189 Cosmetic comprising multi-colored lustrous pearlescent pigments 1 2012
8,409,342 Magnetic pigments and process of enhancing magnetic properties 1 2012
 
ENGELHARD CORPORATION (2)
* 5,326,392 Platy pigments 22 1993
* 6,485,556 Interference pigments 18 2001
 
DRI MARK PRODUCTS, INC. (1)
6,561,713 Metallic ink composition for wick type writing instruments 18 2002
 
IMMUNOMEDICS, INC. (1)
* 5,601,825 Therapeutic conjugates of toxins and drugs 11 1995
 
INNOVA-GESELLSCHAFT ZUR ENTWICKLUNG VERMARKTUNG INNOVATIVER PRODUKTE M.B.H. (1)
* 6,372,517 Magnetic particles with biologically active receptors 10 1999
 
VIAVI SOLUTIONS INC. (13)
7,224,528 Optically variable security devices 21 2005
* 2005/0128,543 Optically variable security devices 37 2005
7,667,895 Patterned structures with optically variable effects 4 2005
7,674,501 Two-step method of coating an article for security printing by application of electric or magnetic field 2 2006
7,876,481 Patterned optical structures with enhanced security feature 2 2006
* 2007/0058,227 Patterned Optical Structures With Enhanced Security Feature 29 2006
7,729,026 Security device with metameric features using diffractive pigment flakes 2 2006
8,025,952 Printed magnetic ink overt security image 1 2007
9,164,575 Provision of frames or borders around pigment flakes for covert security applications 0 2007
9,027,479 Method and apparatus for orienting magnetic flakes 0 2009
9,257,059 Dynamic appearance-changing optical devices (DACOD) printed in a shaped magnetic field including printable fresnel structures 0 2012
9,102,195 Article with curved patterns formed of aligned pigment flakes 0 2013
RE45762 Printed magnetic ink overt security image 0 2013
 
MERCK PATENT GMBH (28)
* 5,106,419 Glass-stable colored pigments 5 1991
* 5,354,374 Iron oxide pigments 14 1992
* 5,320,781 Conductive pigment 22 1993
* 6,630,018 Colored and coated plateletlike pigments 38 1994
* 5,472,640 Conductive lamellar pigments 13 1994
* 5,468,289 Surface-modified pigments 7 1994
* 5,759,257 Color pigments 3 1996
6,632,276 Conductive pigments 7 1997
* 6,132,873 Multilayered interference pigments 40 1998
6,689,205 Multilayer interference pigments 36 2000
7,226,503 Effect pigments based on coated glass flakes 17 2002
7,604,862 Multilayer pigments based on glass flakes 8 2002
* 2004/0134,385 Effect pigments based on coated glass flakes 4 2003
* 7,241,503 Iridescent pigment having high brilliance and high chroma 14 2003
* 2004/0166,316 Iridescent pigment having high brilliance and high chroma 1 2003
* 2004/0170,838 Multilayer pigments based on glass flakes 16 2004
* 7,611,574 Interference pigment with a high covering power 3 2004
* 2007/0028,799 Interference pigment with a high covering power 17 2004
* 2007/0059,519 Barrier coating composition containing an inorganic flake material as well as a device containing this barrier coating composition 1 2004
* 7,303,622 Lustrous black interference pigments 13 2004
* 2006/0070,552 Lustrous black interference pigments 5 2004
7,169,222 Multilayer interference pigments 2 2005
8,906,504 Pigments 0 2006
* 2008/0200,560 Pigments 5 2006
* 2009/0220,557 EFFECT PIGMENT AND USE THEREOF IN COSMETICS AND IN THE FOOD AND PHARMACEUTICAL INDUSTRIES 5 2006
8,658,184 Glass flakes, and the use thereof as transparent filler 0 2007
* 2007/0225,424 Glass flakes, and the use thereof as transparent filler 9 2007
* 2011/0196,046 PIGMENTS 0 2009
 
BASF AKTIENGESELLSCHAFT (4)
* 5,626,661 Luster pigments based on multiply coated plateletlike silicatic substrates 24 1994
* 5,411,586 Luster pigments containing bismuth vanadate 4 1994
* 5,624,486 Multiply coated metallic luster pigments 103 1994
* 5,573,584 Interference pigments for preparing forgeryproof documents 59 1995
* Cited By Examiner